UnloadUnusedAssets

Questions & Answers
1

I have a script that load a 2048px texture from a Resources folder follow an index (FrameINT):

#pragma strict
var OBJ : GameObject;
var TextName : String = "";
var FrameINT : int ;
var FrameOLD : int;
var Tempo : float = 0.0;
var velocity : float = 0.05;

function Awake () {
OBJ.renderer.material.SetTexture("_MainTex", Resources.Load(TextName + Manager.SceneNumber.ToString()+ "_" + Manager.Frames.ToString(), Texture));
}

function Start () {
}

function Update () {
FrameOLD = FrameINT;
FrameINT = Manager.Frames;

if ( !Manager.FadeON && FrameOLD  != FrameINT){
OBJ.renderer.material.SetTexture("_MainTex", Resources.Load(TextName + Manager.SceneNumber.ToString()+ "_" + FrameINT.ToString(), Texture));
}

if (Manager.FadeON){
AssignTexture();
}
}

function AssignTexture () {
OBJ.renderer.material.SetTexture("_MainTexture2", Resources.Load(TextName + Manager.SceneNumber.ToString() + "_" + FrameINT.ToString(), Texture));

	if (Tempo < 1.0){
	Tempo = Tempo + velocity;
	OBJ.renderer.material.SetFloat("_Blend", Tempo);
	}
	else if (Tempo >= 1.0){
	OBJ.renderer.material.SetTexture("_MainTex", Resources.Load(TextName + Manager.SceneNumber.ToString() + "_" +         FrameINT.ToString(), Texture));
	
	Tempo = 0.0;
	OBJ.renderer.material.SetFloat("_Blend", Tempo);
    Resources.UnloadUnusedAssets();

	Manager.FadeON = false;
	Manager.TouchON = true;

}
}

This system work great and give me possibility to load a large number of big size texture.
At first, the application works fine, but with each new load gets too slow.
I try to use :

  Resources.UnloadUnusedAssets();

to unload unused assets but seem not to work.
There is a right way to unload unused texture and speed up my application?

2

The UnloadUnusedAssets and UnloadAsset is the right way to unload assets. For it work, you have to be sure that there is no references.

You said that it become slow. I don’t think that could be the use of memory, use of memory don’t make a game slow until you fill it and the SO start to paginate.

In your code there is many Resource.Load, and even inside a Update function. With “big size texture” it could really get things slow. The Resouces.Load is a very slow operation, and wich I know, there is no cache optimization from unity3d.

Try to profiling deep and see what is really slowing down. This could help:

http://wiki.unity3d.com/index.php?title=Profiler

3

What is the tools that unity Pro has to solve the problem?
Thnaks @Sisso